are my ducklings too fat?

[duck_shepherdess]

They've been eating gamebird feed, and then "duckling starter" from the local feed store. The only treat we've fed them is the occasional bit of kale. They seem happy and active, but they also seem ... lumpy.

From the side:

From the front:

I had this image in my head of tall sleek birds growing from tall sleek ducklings. Am I overreacting? If they are getting obese, what do I do about it?
Thanks.

 

[Goat_Walker]

lol, nope. Thats just where they hold te food, if you feel it you can feel the crumbles in there.

 

[Break an Egg]

It looks like it's just the one that has a large crop. Try massaging it and see if it goes down.